If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Yokogawa AFV30D-A400 Duplex Field Control Unit Product Introduction The Yokogawa AFV30D-A400 Duplex Field Control Unit is a high-reliability process controller developed for advanced distributed automation systems. As the core control platform within Yokogawa’s field control stations, *Your Name: *Your Email: *Your Name: *Vdcode: Submit